What is it used for?

How does it work?

Full marks liquid contains the active ingredient phenothrin, which is an insecticide used to treat head lice infestations. Full marks liquid is a water based (aqueous) solution.

Phenothrin kills lice and their eggs by poisoning them.

The liquid should be applied to the scalp and rubbed into dry hair from the roots to the tips until all the hair is moistened. The best way to do this, particularly with with long hair, is to make a small parting and apply a few drops of the liquid along the hair, then spread this evenly along the length of the hair. Repeat the process with numerous other small sections until the whole scalp has been covered. Leave the hair to dry naturally in a warm but well ventilated room (don't use a hairdryer).

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After 12 hours, or the next day if preferred, the hair should be shampooed in the normal way. The hair should be rinsed and then combed with a nit comb while wet to remove dead lice and eggs.

It is usually recommended that the treatment is repeated after seven days to kill any lice emerging from eggs that survived the first treatment.

Warning!

Full marks liquid is for external use only. If the liquid is accidentally swallowed, please seek medical advice immediately.

Avoid getting the liquid in contact with the eyes.

Don't apply the liquid to broken or infected skin.

This preparation may affect permed, coloured or bleached hair.

It is recommended that people giving repeated applications or treating large numbers of individuals, eg clinic nurses, should wear rubber gloves to apply and wash out the liquid.

Full marks liquid should not be used more than once in a week, or for more than three consecutive weeks.

Not to be used in

Infants under six months of age, unless on the advice of a doctor.

This medicine should not be used if you are allergic to one or any of its ingredients. Please inform your doctor or pharmacist if you have previously experienced such an allergy.

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If you feel you have experienced an allergic reaction, stop using this medicine and inform your doctor or pharmacist immediately.

Pregnancy and breastfeeding

Certain medicines should not be used during pregnancy or breastfeeding. However, other medicines may be safely used in pregnancy or breastfeeding providing the benefits to the mother outweigh the risks to the unborn baby. Always inform your doctor if you are pregnant or planning a pregnancy, before using any medicine.

This medicine should be used with caution during pregnancy and breastfeeding. Seek medical advice from your doctor before using this medicine if you are pregnant or breastfeeding.

Side effects

Medicines and their possible side effects can affect individual people in different ways. The following are some of the side effects that are known to be associated with this medicine. Just because a side effect is stated here does not mean that all people using this medicine will experience that or any side effect.

Skin irritation (very rare).

The side effects listed above may not include all of the side effects reported by the medicine's manufacturer.

For more information about any other possible risks associated with this medicine, please read the information provided with the medicine or consult your doctor or pharmacist.

The materials in this web site are in no way intended to replace the professional medical care, advice, diagnosis or treatment of a doctor. The web site does not have answers to all problems. Answers to specific problems may not apply to everyone. If you notice medical symptoms or feel ill, you should consult your doctor - for further information see our Terms and conditions.